Data layer

The data layer consists of topology storage, event storage, performance reporting data storage, and root cause analysis tools.

About topology storage
Topology data is stored in the Network Connectivity and Inventory Model (NCIM) database. Network Manager reports also use the NCIM database.
About root cause analysis and event enrichment
Root cause analysis (RCA) and event enrichment are conceptually distinct topics; however, within the Network Manager architecture, RCA is a plug-in to the Event Gateway, the process that manages event enrichment.
About event storage
Event and alert data is stored in the Tivoli Netcool/OMNIbus ObjectServer. The ObjectServer is a high-speed, in-memory event database at the center of Tivoli Netcool/OMNIbus.
About historical polled data collection and storage
At any time a network administrator can set up polling of specific SNMP and ICMP data on one or more network devices. This data is stored in the NCPOLLDATA historical polled data database. Operators can then use the Cognos Analytics viewer to run performance reports to interpret the data. Users of Netcool Operations Insight can also visualize historical polled data in the Network Health Dashboard. Use this information to learn about historical polled data collection and storage architecture and some of the tasks that network administrators and network operators perform that relate to historical polled data.

Parent topic: About Network Manager